Introduction – Quantum light-matter interfaces are a critical component for quantum repeating [1]}, [2]} technology and therefore building large-scale quantum networks [3]}, [4]}, [5]}. Such interfaces allow for a quantum memory [6]}, a device capable of storing true single photons with both high fidelity and efficiency, with on-demand retrieval after a sufficiently long storage time. Besides these important attributes, compatibility with wavelengths in the telecommunications C-band, as well as GHz operational bandwidth, is of crucial importance to allow high repetition rate quantum photonic operations in low-loss optical fiber networks.
